Application of Molecular Distillation in Fish Oil Refining
Release Time:
2024-09-03
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The principle of molecular distillation is to make use of the different degrees of affinity between different molecules. By controlling the conditions such as temperature and pressure, the mixture begins to vaporize. Different components in the vapor form liquids in the condenser and are separated according to their boiling points. This distillation method not only has a good separation effect, but also can be repeatedly separated and purified, and is widely used in chemical, pharmaceutical and other fields.
Natural products are extracted from animals, and molecular distillation techniques are also widely used, such as refined fish oil.
Aishengke specializes in the development and research of molecular distillation systems to provide customers with the perfect solution for fish oil production.
The production process of Aishengke fish oil:
1. Add ethanol and urea for urea inclusion.
2. Completion of clathrate, filter urea and distill out ethanol
3. Purification of fish oil by multi-stage molecular distillation
Fish oil is the general term for all oils in the fish body. It comes from the body of large marine fish. Its main components are Omega-3 fatty acids (including DHA and EPA), which are polyunsaturated fatty acids that can reduce inflammation. Lower blood fat, prevent cardiovascular disease.
Fish oil is rich in all-cis highly unsaturated fatty acids eicosapentaenoic acid (EPA for short) and docosahexaenoic acid (DHA for short), which have good physiological activities, not only reducing blood fat, blood pressure, It can inhibit platelet aggregation, reduce blood viscosity, etc., and also has anti-inflammatory, anti-cancer, and immune-enhancing effects. It is considered to be a natural medicine and functional food with great potential.
EPA and DHA are mainly extracted from marine fish oil, and the traditional separation methods are urea inclusion precipitation and freezing. The use of urea inclusion precipitation method can effectively remove saturated and low unsaturated fatty acid components in the product, and increase the content of DHA and EPA in the product, but because it is difficult to separate other high unsaturated fatty acids from DHA and EPA, only Can make w(DHA+EPA)<80%. Moreover, the product has heavy color, strong fishy smell, and high peroxide value. It needs further decolorization and deodorization to make the product, and the recovery rate is only 16%. Because the mean free path of the impurity fatty acid in the material is similar to that of EPA and DHA ethyl ester , although the molecular distillation method can only make w(EPA+DHA)=72 5%, the recovery rate can reach 70%, the product has good color, pure smell, low peroxide value, and the mixture can be divided into DHA and EPA different content ratio products. Therefore, molecular distillation is an effective method for separating and purifying EPA and DHA.
Latest News
2024-09-03
Abstract: Oil deacidification is an important step in food processing, which aims to remove free fatty acids in oil and improve its quality and stability. Traditional deacidification methods have some limitations, such as low efficiency, high energy consumption, and loss of nutrients. In recent years, molecular distillation technology has gradually attracted attention as a new deacidification method. This article will introduce the application of molecular distillation in oil deacidification, including the principle, operation process and advantages, and focus on the outstanding advantages of Aishengke in molecular distillation technology.
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